mitk::PlaneClipping Namespace Reference

Utility functions for plane clipping calculations. More...

Functions
static bool	LineIntersectZero (vtkPoints *points, int p1, int p2, double *bounds)
	Internal helper method for intersection testing used only in CalculateClippedPlaneBounds(). More...
static bool	CalculateClippedPlaneBounds (const BaseGeometry *boundingGeometry, const PlaneGeometry *planeGeometry, double *bounds)
	Calculate the bounding box of the resliced image. More...

Detailed Description

Utility functions for plane clipping calculations.

Function Documentation

CalculateClippedPlaneBounds()

static bool mitk::PlaneClipping::CalculateClippedPlaneBounds ( const BaseGeometry *  boundingGeometry, const PlaneGeometry *  planeGeometry, double *  bounds  )

static

Calculate the bounding box of the resliced image.

This is necessary for arbitrarily rotated planes in an image volume. A rotated plane (e.g. in swivel mode) will have a new bounding box, which needs to be calculated by clipping the bounding geometry edges against the plane.

Parameters

[in]	boundingGeometry	The geometry defining the volume bounding box.
[in]	planeGeometry	The plane geometry to clip against.
[out]	bounds	Array of 6 doubles receiving [xmin, xmax, ymin, ymax, zmin, zmax] in physical coordinates (mm), adjusted by plane spacing.

Returns

True if valid bounds were computed, false if the plane does not intersect the volume.

Definition at line 87 of file mitkPlaneClipping.h.

References mitk::BaseGeometry::GetBoundingBox(), mitk::BaseGeometry::GetImageGeometry(), mitk::BaseGeometry::GetSpacing(), mitk::BaseGeometry::GetVtkTransform(), and LineIntersectZero().

LineIntersectZero()

static bool mitk::PlaneClipping::LineIntersectZero ( vtkPoints *  points, int  p1, int  p2, double *  bounds  )

static

Internal helper method for intersection testing used only in CalculateClippedPlaneBounds().

Tests whether the line segment between two points crosses the z=0 plane, and if so, updates the bounds with the intersection coordinates.

Parameters

[in]	points	VTK point set containing the coordinates.
[in]	p1	Index of the first point in the point set.
[in]	p2	Index of the second point in the point set.
[in,out]	bounds	Array of 6 doubles [xmin, xmax, ymin, ymax, zmin, zmax] updated with the intersection point if found.

Returns

True if an intersection with z=0 was found.

Definition at line 39 of file mitkPlaneClipping.h.

Referenced by CalculateClippedPlaneBounds().